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Re: SGML complexity

  • From: <juanrgonzaleza@c...>
  • To: <xml-dev@l...>
  • Date: Fri, 8 Sep 2006 07:30:09 -0700 (PDT)

Re:  SGML complexity
Philippe Poulard said:
> juanrgonzaleza@c... wrote:
>> transforming this
>> <math code="LaTeX">x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}</math>
>> to this
>> <math>
>>   <mi>x</mi>
>>   <mo>=</mo>
>>   <mfrac>
>>     <mrow>
>>       <mrow>
>>         <mo>-</mo>
>>         <mi>b</mi>
>>       </mrow>
>>       <mo>&PlusMinus;</mo>
>>       <msqrt>
>>         <msup>
>>           <mi>b</mi>
>>           <mn>2</mn>
>>         </msup>
>>         <mo>-</mo>
>>         <mrow>
>>           <mn>4</mn>
>>           <mo>&InvisibleTimes;</mo>
>>           <mi>a</mi>
>>           <mo>&InvisibleTimes;</mo>
>>           <mi>c</mi>
>>         </mrow>
>>       </msqrt>
>>     </mrow>
>>     <mrow>
>>       <mn>2</mn>
>>       <mo>&InvisibleTimes;</mo>
>>       <mi>a</mi>
>>     </mrow>
>>   </mfrac>
>> </math>
>> can be a nightmare in XSLT 1 (specially when compared with JS-DOM or
>> PHP methods). I do not know of XSLT 2 new capabilities but Mike here
>> could say us something.
> If I had such a transformation to perform, I would simply do it like
> this : <xsl:template match="math[code='LaTeX'"]>
>      <xsl:value-of select="lib:latex2mathml( . )"/>
> <xsl:template>
> or even if you don't know how to bind a function library to your XSLT
> processor :
> <xsl:template match="math[code='LaTeX'"]>
>      <xsl:value-of select="document( concat(
> 'http://my.rest.service/latex/2/mathml?code=', . ) )"/>
> <xsl:template>

And sure i can also reference a .js from the XSLT and final doc is
transformed to mathml ouput on the fly.

And sure also i could do full match pattern transforming predefined
equations and store several billions of predefined patterns in an external

And sure...

But difficult to believe i was using XSLT for the transformation.

> Nobody said that XSLT must be standalone, and I'm sure it's easy to find
>  a converter for LaTeX.

Please point some doing _exactly_ the transformation i wrote.

> As you combined some XML tags with LaTeX, why not using both tools and
> make a smart bridge between them ?

Combination of XML with LaTeX is common practice since MathML is too
verbose. Several MathML tools work in that way. Combination of c-MathML
with TeX is also defined in the MathML spec.

What you mean by "make a smart bridge between them"

> --
> Cordialement,
>                ///
>               (. .)
>   --------ooO--(_)--Ooo--------
> |      Philippe Poulard       |
>   -----------------------------
>   http://reflex.gforge.inria.fr/
>         Have the RefleX !

Juan R.


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